This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 120 |
| 3 | 523 |
| 4 | 1543 |
| 5 | 1615 |
| 6 | 9192 |
| 7 | 16003 |
| 8 | 21589 |
| 9 | 101625 |
| 10 | 148947 |
| 11 | 169047 |
| 12 | 362415 |
| 13 | 497588 |
| 14 | 745709 |
| 15 | 815536 |
| 16 | 4121913 |
| 17 | 59871203 |
| 18 | 199990957 |
| 19 | 309564563 |
| 20 | 361924763 |
| 21 | 1029742912 |
| 22 | 1571746050 |
| 23 | 7713398235 |
| 24 | 18093587867 |
| 25 | 81964002218 |
| 26 | 483653860925 |